What will happen to Katrin/Anni?
There will be some drama, but then they will get a long and in-depth love story.
Katrin will reject Anni, break her heart and Linda will leave the show this year.
They will try for a while, it doesn't work and they decide to go back to being friends. Linda stays.
Anni realizes that Jasmin still loves her, she leaves Katrin (and Berlin) and goes to NYC. Linda leaves the show.
They break up. Decide to be friends. But later will get a 2nd chance. Linda stays.
Different development. (Explain in a comment!)